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Finding the Fourth Proportional to 129,796.79, 194,694.30 and 69,853.47

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Solution

The fourth proportional to 129,796.79, 194,694.30 and 69,853.47 is: 104,779.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,796.79 : 194,694.30 = 69,853.47 : x
  2. Step 2: Convert to fraction form
    129,796.79/194,694.30 = 69,853.47/x
  3. Step 3: Cross multiply
    129,796.79x = 194,694.30 × 69,853.47
  4. Step 4: Simplify right side
    129,796.79x = 13,600,072,444.22
  5. Step 5: Solve for x
    x = 13,600,072,444.22/129,796.79
  6. Step 6: Final answer
    x = 104,779.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.